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As of June 30, 2002

Physical Progress

Contractor

JV of Thang Long and Truong Son

Commencement of the Works

1st July 2001

Time Elapsed (days) 365 of 900 (40.56%)
Progress  

North Approach

 

Lang Co Bridge (867m)

 

South Approach

 

 

Photographs

Construction of girder casting yard No. 1
Pouring concrete girder at casting yard No. 1
Excavation of hole at pier P23
Construction of cross head at P17
Construction of bored pile at P22
Excavation and boulder breaking A2
Finishing girder at casting yard No. 2

 

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Construction Supervision

Summary 

Bored Piling:

Pier No.9, Pier No.14, Pier No.17, Pier No.18, Pier No.19 and Pier No.23 are completed bored piling.

Total 71 nos. of bored piling are completed up to present.

Pier No.15, Pier No.16 and Pier No.22 are under construction.

Substructure:

Pier No.18 has been completed concrete works.

Pier No.14, Pier No.17 and Pier No.23 are under construction.

Superstructure:

Superstructure is not commenced yet.

Approach Road

North approach road is under construction and South approach road is finished embankment.

Girder Production

Two girder production yard P19 and A2 are under operation.

17 nos. of girder are completed.

Permanent Works

  • Bored Piling:

Three bored piling machines R-9G, TRC and Reffer are under the condition of operation.

Three more bored piling machines GPS, Bawer and ED5500 are mobilizing and will commence to work soon.

Pier No.9: 10 of 10 nos. of bored piling are finished and continue piling work.

Pier No.14: 10 of 10 nos. of bored piling have been completed.

Pier No.15: 5 of 12 nos. of bored piling are finished and continue piling work.

Pier No.16: 3 nos. of piles were drilled but boulders are disturbing to continue drilling work. Contractor is preparing double casing method now.

Pier No.17: 10 of 10 nos. of bored piling have been completed.

Additional pile No.7' has constructed because Pile No.7 was rejected due to the result of working record and sonic test.

Pier No.18: 12 of 12 nos. of bored piling have been completed.

Pier No.19: 10 of 10 nos. of bored piling have been completed but No.6 pile is waiting for sonic test for approval because this pile had trouble at the concrete pouring time.

Pier No.22: 5 of 9 nos. of bored piling are finished and continue piling work.

Pier No.23: 9 of 9 nos. of bored piling have been completed.

  • Substructure:

Pier No.14: Sheet piling work has commenced and will continue excavation for footing.

Pier No.17: Pier column is under construction of concrete work.

Pier No.18: Concrete work has been completed up to cross head.

Pier No.23: Excavation is finished and continue to footing concrete.

  • Superstructure:

Superstructure work is not commenced yet.

  • Approach Road

North approach road is finished embankment up to 50,000m3 and continue.

South approach road is finished embankment up to 1,000m3.

  • Girder Production

Production yard P19: 17 nos. of girder are finished production and will continue.

Production yard A2: Preparation work has completed and commenced girder production.

  • Schedule overview

Schedule has been revised by Contractor, but total schedule is 3 month behind at end of June 2002 based on the Clause 14.1 schedule.

Following activities are delayed now.

Mobilization of piling machine No.5 at Pier No.1: 90 days behind of schedule but no action observed at site.

Scaffolding for Pier No.1: 91 days behind of schedule but no action observed at site.

Mobilization of piling machine for Abutment No.2: 77 days behind of schedule.

Piling machine is under mobilization and parts of machine arrived at site at end of June 2002.

Two critical paths are running on the schedule such as piling machine at Pier 1 and another is piling machine for abutment 2 of bored piling.

The schedule is delaying day by day because no action has taken for the critical activities of mobilization of both piling machine at this moment.

Construction method of Pier No.1 to Pier No.6 has agreed to change from floating method to island method at the technical meeting with PMU 85 in May 2002.

Contractor is requested to submit revise schedule including their idea to recover of present delay job and mobilization schedule for our approval, but nothing reply from contractor up to now.

Activities for Coming Months
  • Permanent Works:

Construction of P14: base, Pier shaft and cross head

Bored pile of P15, P16, P22, P7, P8, P21

Construction P23: Pier base, pier column.

PCI girder: 16 girders

Construction of Northern Approach

Construction of P9: completed pier base

Construction P22: completed pier base

Bored pile P24: Completed 3/6 piles d1500m

  • Temporary Works:

Construction of access road No.1 & No.2

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